Improvement in plow-clevises



WILLIAM LAHMAN, 'or WELLSWLLE, eineu *Heerenve-:rn en?" 'in eieweievlees.,

. Specification forming pari of Letters Patent No. h'llldil., dated Juli,- 8, 1871i; application filed Api-i1 3, 1873.

' To all. whom i5/icy concern: s By this construction of couutersunk recess Be il; known that I, WILLIAM LAHMAN, of and square catch on J@he spring-hook, the pin l 'Wel1sville, in the county of Ureword. and in cannot become disengaged or be puehed up y the Stilte of Ohio, have invented certain Anew werd ont of place wit-honi: the operator presselnd. nsel'nl inprovelnens in llew-levis; ing` upon the extended end of the spring. 'and (lo hereby declare that; the following is By preesing inward enthe point o' the fl 'e' full, clear, nud exact description thereof, ,Spring-hook C, so asto release the sinne freni reference being;` haul to Jche accompanying /the shoulder i, the pin may easily he with drawings, and t the letters of reference (lrnwn. marked tlie1eon,naking a, parroci' this spec* lalnnwnre theta. devis-pin hnvingn spring, ilieetien.. the end ot' which is curved outward and the The nz'ilsurenf my invention consists in aV curved portion extending below 'the under spring-pin for securing nl clevis to the plcwpart of' the'bottoin plete of the @levis-ber, ie

` beam, ns will be hereinafter. more 'fully set not new, hence Irdieeln-ini euch ,tolsemfyiem-f forth.,A veiition. in :ny device the clevisrbnr is melde' ln order to ennhle'others skilled. in the nrt of one piece of inermi in Uehnpe, ns shown, .to which inyinrention eppertnins to nlnkennd nnd the l'orxn ol;l shoulder iernxeil within the use the sinne, l. will now proceed 'to describe under prong o l' the cleviebar, and the square ite conelgrnction and operation, I'el'elrin to the shoulder on the spring will prevent any brush, i# l annexed dra-wing, which represents :L eine &c., from pushing the pin upward. und ont el" View el' e plow-cleviewith my spring-pin, beth pince. v being partly in sect-ion. l Hering' thu` l'ullbv described my invention, A represents a, plow-eleve; constructed in whn l clnim ne new, and lenire to Secure by any of thelnown und usual wnys, its ends L Leiters finten', iesa hnving; earch n round hele throng-l1 them for The lJ--shnperl cleviehnri, forming prongs the passage of the elevie-pin. B represente u inw-ing hnlee i'nr the pnseugeofthe elevis-v l e 'the cleviepin, having,` n, henri., d, :it one end, pin, .nini the lower prong prorirlecl wiilie ne shown. This pin is groereil longitudinally ceuntersnnk recess, I), 'in enn'iL-inetion with the from the other end npwnril for snit-nine lien heeded pin l, provided with n Spring, U, hei# tence, end-ln the upper end of this groove is ing n Aeqnure shoulder und extended below secured. n enringlleolr, U, lnwine; n square the bottoni ol the lower devis-prong, eli. ne

shoulder, the point olf which projects below shown und described.

the end of the pin. .in the under side of one l'n'lientimony limi lv clnilu the foregoing ll ofthe ende c of the clevis is nnnie e counter here hereunrn ser, my hand this. ist. dey of x sunk; recess, l1, eronnil the pin-hole, ieriningn Blanch, li, A i

shoulder, Ii., Within the lower nrn'i of the elevie, WM. LAHMAN. the pin .l being passe-il through the other end i w and ihrongh the plow-benin, the end of the llil'meeses; pin, end epringfhook entering the receseed 'Winni/ln lnon'ron, end, anni the hoek enehing en the shoulder i, WA umn YnmIAN. nml tiene hehling the pin from coming," ont. 

